Dear support:I have my osticket self-hosted , I uploaded all the files needed of osticket . After I check my url for installation, I got parse errors as :Parse error: syntax error, unexpected T_STATIC in D:\wwwroot\hitritftp\wwwroot\include\class.plugin.php on line 122;I checked class.plugin.php on line 122, and found these statements: static function allInstalled() { if (static::$plugin_list) return static::$plugin_list;I can't figure it out what happened, could you please help. thanks